Wrist watch casing



FIG. 1 is a top plan view of a wrist watch casing showing my new design;

FIG. 2 is a top, front and right side perspective view;

FIG. 3 is a right side elevational view, with the left side elevational view being a mirror image;

FIG. 4 is a top plan view of a second embodiment of my new design of FIGS. 1-3;

FIG. 5 is a top plan view of a third embodiment of my new design of FIGS. 1-3; and

FIG. 6 is a bottom plan view thereof.

The dotted line showing of a strap in FIGS. 1, 4 and 5 is for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a wrist watch casing, as shown and described. 